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首页> 外文期刊>American journal of applied sciences >Experimental and Skeletal Kinetic Model Study of Compressed Natural Gas Fueled Homogeneous Charge Compression Ignition Engine | Science Publications
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Experimental and Skeletal Kinetic Model Study of Compressed Natural Gas Fueled Homogeneous Charge Compression Ignition Engine | Science Publications

机译：压缩天然气均质充气压缩点火发动机的实验和骨架动力学模型研究科学出版物

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> Problem statement: In homogeneous charge compression ignition engines fuel oxidation chemistry determines the auto-ignition timing, heat release, reaction intermediates and the ultimate products of combustion. To shorten development time and to understand combustion processes, the use of simulation is increasing. Approach: A model that correctly simulates fuel oxidation at these conditions would be a useful design tool. Detailed models of hydrocarbon fuel oxidation, consisting of hundreds of chemical species and thousands of reactions. A way to lessen the burden was to use a skeletal reaction model, containing only tens of species and reactions. Results: The model was developed from the existing pre-ignition model, which had 10 species, 5 elementary reactions for kinetic and 6 elementary reactions for equilibrium and the standard k-? turbulence model had been used in this investigation. This model combines the chemistry of the low, intermediate and high temperature regions. Conclusion: Simulations are compared with measured and calculated data from the engine operating at the following conditions: speed 1500 RPM, inlet temperature 363-433 K, fuel CNG and ? range 3-5. The simulations are generally in good agreement with the experimental data including temperature, pressure, combustion duration and ignition delay and heat release.
机译： > 问题陈述：在均质充量压缩点火发动机中，燃料氧化化学作用决定了自动点火正时，放热，反应中间产物和最终燃烧产物。为了缩短开发时间并了解燃烧过程，越来越多地使用模拟。 方法：在这些条件下正确模拟燃料氧化的模型将是有用的设计工具。烃燃料氧化的详细模型，包括数百种化学物质和数千个反应。减轻负担的一种方法是使用仅包含数十种物种和反应的骨骼反应模型。 结果：该模型是根据现有的点火前模型开发的，该模型具有10种，5个动力学基本反应和6个平衡基本反应以及标准k-?。湍流模型已用于这项研究。该模型结合了低温，中温和高温区域的化学性质。 结论：将模拟与在以下条件下运行的发动机的测量数据进行比较：转速1500 RPM，进气温度363-433 K，燃油CNG和？范围3-5。该模拟通常与包括温度，压力，燃烧持续时间以及点火延迟和放热的实验数据非常吻合。

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